Marine crane with hydraulic system oil leakage detection function

Abstract

The utility model discloses a marine crane with a hydraulic system oil leakage detection function, which comprises a crane body for hoisting and transferring an object, and a hydraulic telescopic rod for driving a cargo boom on the crane body to move is arranged on the crane body. The hydraulic telescopic rod is provided with a leakage detection assembly used for conducting inner leakage detection on the interior of the hydraulic telescopic rod, and the leakage detection assembly is provided with two flow meters used for conducting flow detection on the two oil inlet and outlet ends on the outer wall of the hydraulic telescopic rod respectively. According to the utility model, not only can the leakage problem in the hydraulic telescopic rod be timely and accurately perceived, the fault hidden danger be killed in the bud stage, the reliability of the hydraulic system of the marine crane be greatly improved, but also the interface of the telescopic end of the hydraulic telescopic rod can be cleaned, and the corrosion and abrasion of impurities such as seawater, sand dust and the like to a sealing element at the interface can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of marine crane technology, specifically a marine crane with hydraulic system oil leakage detection function. Background Technology

[0002] Marine cranes are crucial in ship operations, and the stable operation of their hydraulic systems directly affects operational safety and efficiency. However, frequent hydraulic system leaks can cause equipment damage, operational interruptions, and even safety accidents, making leak detection extremely important.

[0003] A search revealed that patent publication number CN217102819U discloses a marine crane with wave-adaptive function, relating to the field of marine crane technology. This marine crane with wave-adaptive function includes a base, a rotating platform, a fixed seat, a boom, and a hook. Movable boxes are fixedly connected to both sides of the boom. Support arms are hinged to both sides of the rotating platform. A slider is slidably connected inside each movable box, and a fixed rod is fixedly connected inside the movable box. Two limiting rails are fixedly connected to the bottom of the rotating platform. A lead screw is rotatably connected inside each limiting rail, and a positioning block is connected to the outside of the lead screw via a through-nut pair. A moving block is slidably connected inside each limiting rail, and a second spring is fixedly connected to both sides of each moving block. A support rod is hinged to one side of each moving block. This marine crane with wave-adaptive function is advantageous for adapting to different sea surface environments, is easy to adjust, and has strong adaptability.

[0004] In actual use, existing marine cranes drive the boom through a hydraulic telescopic boom. Because the hydraulic telescopic boom is constantly exposed to the elements, the interface at its extension end is susceptible to corrosion from seawater, sand, and other impurities. This not only accelerates the wear of seals leading to oil leaks, but also allows impurities to enter the hydraulic system and damage internal components. Currently, traditional methods for detecting oil leaks in marine crane hydraulic systems rely primarily on manual inspections, observing oil traces in hydraulic lines, joints, and cylinders to determine if a leak exists. When internal leaks occur in the hydraulic telescopic boom, they are difficult for workers to detect, and the accumulation of internal leaks can easily lead to serious malfunctions. Therefore, a marine crane with a hydraulic system oil leak detection function needs to be designed. Utility Model Content

[0005] In view of the defects or deficiencies of marine cranes, the purpose of this utility model is to provide a marine crane with hydraulic system oil leakage detection function. It can not only detect the internal leakage of the hydraulic telescopic rod in a timely and accurate manner, nipping potential problems in the bud, but also clean the interface of the telescopic end of the hydraulic telescopic rod, effectively reducing the corrosion and wear of the seals at the interface by seawater, sand and other impurities.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a marine crane with hydraulic system oil leakage detection function, including a crane body for lifting and transferring objects, a hydraulic telescopic rod for driving the crane boom on the crane body to move, a leakage detection component for detecting internal leakage on the hydraulic telescopic rod, two flow meters for detecting the flow rate at two oil inlet and outlet ends on the outer wall of the hydraulic telescopic rod, and a cleaning component for cleaning the interface at the telescopic end of the hydraulic telescopic rod.

[0008] Preferably, two flow meters are respectively installed on two oil inlet and outlet ends on the outer wall of the hydraulic telescopic rod, and the oil inlet and outlet ends on one end wall of the flow meter are connected to the oil inlet and outlet ends on the hydraulic telescopic rod through pipe joints, and the oil inlet and outlet ends on the other end wall of the flow meter are connected to the hydraulic oil delivery pipeline through pipe joints.

[0009] Preferably, the cleaning assembly is provided with a piston cylinder, the circumferential outer wall of the piston cylinder is connected to the circumferential outer wall of the hydraulic telescopic rod through a connecting block, and a rubber piston is provided inside the piston cylinder.

[0010] Preferably, the rubber piston is installed at one end of the piston rod, and the other end of the piston rod is located outside the piston cylinder. Two air inlet pipes and one exhaust pipe are provided on the circumferential outer wall of one end of the piston cylinder, and both the air inlet pipe and the exhaust pipe are provided with one-way valves.

[0011] Preferably, the air intake pipe is connected to the arc-shaped exhaust hood via a gas delivery pipe, and the arc-shaped exhaust hood is located on both sides of the interface at the telescopic end of the hydraulic telescopic rod.

[0012] Preferably, both ends of the hydraulic telescopic rod are equipped with hinge joints, and the hinge joints on the telescopic end of the hydraulic telescopic rod are connected to the other end of the piston rod through an L-shaped connecting rod.

[0013] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0014] 1. In this utility model, through a series of structural arrangements, two flow meters are used to detect the flow rate at the two inlet and outlet oil ends on the outer wall of the hydraulic telescopic rod. Under normal working conditions, the flow rate of oil entering the hydraulic telescopic rod should be approximately equal to the flow rate of oil exiting the hydraulic telescopic rod (considering some normal losses, such as a small amount of oil leakage in the pipeline and a slight compression of the system, there will be a certain difference, but this difference is within the normal range). When internal leakage occurs in the hydraulic telescopic rod, some oil will flow from the high-pressure chamber to the low-pressure chamber through the poorly sealed part inside the hydraulic telescopic rod, and this leaked oil will not flow out of the inlet of the hydraulic telescopic rod. Oil flows out from the outlet end. Therefore, the flow rate entering the hydraulic telescopic rod at this time, in addition to driving the piston movement and normal wear and tear, also includes a portion used to compensate for internal leakage. This results in the flow rate entering the hydraulic telescopic rod being significantly greater than the flow rate leaving the hydraulic telescopic rod, and the difference exceeding the normal range. Thus, by measuring the flow rate data from two flow meters, the change in flow rate can be known, and it can be determined whether there is an internal leakage problem in the oil cylinder. Compared with the traditional method of relying on manual experience or simple pressure judgment, this method can detect internal leakage problems more promptly and accurately, nip potential faults in the bud, avoid serious failures caused by the accumulation of internal leakage, and significantly improve the reliability of the hydraulic system of marine cranes.

[0015] 2. In this utility model, through a series of structural arrangements, when the hydraulic telescopic rod extends or retracts, it drives the rubber piston to move within the piston cylinder via the piston rod. During this movement, external air enters the piston through the intake pipe and exits through the exhaust pipe. The exhaust gas is then transported to the arc-shaped exhaust hood via a gas delivery pipe. The air within the arc-shaped exhaust hood blows towards the extension / retraction end interface of the hydraulic telescopic rod, effectively cleaning this interface and reducing the erosion and wear of the seals by seawater, sand, and other impurities. This extends the lifespan of the seals, reduces the risk of oil leakage due to sealing problems, and consequently reduces downtime and economic costs associated with frequent seal replacements and hydraulic system maintenance, significantly extending the overall service life of the marine crane. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the hydraulic telescopic rod of this utility model. Figure 1 .

[0019] Figure 3 This is a schematic diagram of the structure of the hydraulic telescopic rod of this utility model. Figure 2 .

[0020] Figure 4 This is a schematic diagram of the cleaning component of this utility model.

[0021] Figure 5 This is a cross-sectional view of the connection structure between the piston rod and the piston cylinder in this utility model.

[0022] In the picture:

[0023] Crane body;

[0024] Hydraulic telescopic rod; 111. Flow meter; 112. Hydraulic oil delivery pipeline; 113. Connecting block; 114. Hinge joint; 115. L-shaped connecting rod; 116. Cleaning assembly;

[0025] 1161. Piston cylinder; 1162. Piston rod; 1163. Gas delivery pipe; 1164. Arc-shaped exhaust hood; 1165. Rubber piston; 1166. Intake pipe; 1167. Exhaust pipe. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] like Figure 1-5As shown, a marine crane with hydraulic system oil leakage detection function includes a crane body 100 for lifting and transferring objects. The crane body 100 is equipped with a hydraulic telescopic rod 110 for driving the crane boom on the crane body 100 to move. The hydraulic telescopic rod 110 is equipped with a leakage detection component for detecting internal leakage inside the hydraulic telescopic rod 110. The leakage detection component is equipped with two flow meters 111 for detecting the flow rate at two oil inlet and outlet ends on the outer wall of the hydraulic telescopic rod 110. The hydraulic telescopic rod 110 is equipped with a cleaning component 116 for cleaning the interface at the telescopic end of the hydraulic telescopic rod 110.

[0030] Two flow meters 111 are respectively installed on the two inlet and outlet oil ends on the outer wall of the hydraulic telescopic rod 110. The inlet and outlet oil ends on one end wall of the flow meter 111 are connected to the inlet and outlet oil ends on the hydraulic telescopic rod 110 through pipe joints, and the inlet and outlet oil ends on the other end wall of the flow meter 111 are connected to the hydraulic oil delivery pipeline 112 through pipe joints.

[0031] The cleaning assembly 116 is provided with a piston cylinder 1161. The circumferential outer wall of the piston cylinder 1161 is connected to the circumferential outer wall of the hydraulic telescopic rod 110 through a connecting block 113. A rubber piston 1165 is provided inside the piston cylinder 1161.

[0032] A rubber piston 1165 is installed at one end of a piston rod 1162, and the other end of the piston rod 1162 is located outside the piston cylinder 1161. Two intake pipes 1166 and one exhaust pipe 1167 are provided on the circumferential outer wall of one end of the piston cylinder 1161. Both the intake pipes 1166 and the exhaust pipe 1167 are equipped with one-way valves. The one-way valve on the intake pipe 1166 allows external air to enter the piston cylinder 1161 through the intake pipe 1166, but the gas in the piston cylinder 1161 cannot be discharged to the outside through the intake pipe 1166. The one-way valve on the exhaust pipe 1167 allows only exhaust and not intake.

[0033] The intake pipe 1166 is connected to the arc-shaped exhaust hood 1164 through the gas delivery pipe 1163. The arc-shaped exhaust hood 1164 is set on both sides of the extension end interface of the hydraulic telescopic rod 110.

[0034] Both ends of the hydraulic telescopic rod 110 are equipped with hinge joints 114. The hinge joints 114 on the telescopic end of the hydraulic telescopic rod 110 are connected to the other end of the piston rod 1162 through an L-shaped connecting rod 115. When the hydraulic telescopic rod 110 is working, it will drive the hinge joints 114 on the telescopic end of the hydraulic telescopic rod 110 to move. When the hinge joints 114 on the telescopic end of the hydraulic telescopic rod 110 move, they will drive the piston rod 1162 to move through the L-shaped connecting rod 115.

[0035] Working Principle: During use, two flow meters 111 are used to detect the flow rate at the two inlet and outlet ends on the outer wall of the hydraulic telescopic rod 110. Under normal operating conditions, the flow rate of oil entering the hydraulic telescopic rod 110 should be approximately equal to the flow rate of oil exiting the hydraulic telescopic rod 110. Considering some normal losses, such as minor leaks in the pipeline and slight compression of the system, there will be a certain difference, but this difference is within the normal range. When internal leakage occurs in the hydraulic telescopic rod 110, some oil will flow from the high-pressure chamber to the low-pressure chamber through the poorly sealed part inside the hydraulic telescopic rod 110. This leaked oil does not flow out from the inlet and outlet ends of the hydraulic telescopic rod 110. Therefore, at this time, in addition to driving the piston movement and normal losses, a portion of the flow rate entering the hydraulic telescopic rod 110 is used to replenish the internal leakage, resulting in a significantly greater flow rate entering the hydraulic telescopic rod 110 than the flow rate exiting the hydraulic telescopic rod 110, and the difference exceeds the normal range. Thus, the flow rate can be determined by the flow data detected by the two flow meters 111. By observing changes in the quantity, it is possible to determine whether there is an internal leakage problem in the hydraulic cylinder. Compared with the traditional method of relying on manual experience or simple pressure judgment, it can detect internal leakage problems more timely and accurately, nip potential faults in the bud, avoid serious failures caused by the accumulation of internal leakage, and significantly improve the reliability of the hydraulic system of marine cranes. When the hydraulic telescopic rod 110 moves forward and backward, it drives the rubber piston 1165 to move within the piston cylinder 1161 via the piston rod 1162. When the rubber piston 1165 moves within the piston cylinder 1161, external air enters the piston through the air inlet pipe 1166, and the air in the piston cylinder 1161 is discharged through the exhaust pipe. The gas discharged from the exhaust pipe 1167 is transported to the arc-shaped exhaust hood 1164 through the gas delivery pipe 1163. The air in the arc-shaped exhaust hood 1164 blows towards the extension end interface of the hydraulic telescopic rod 110, thereby cleaning the extension end interface of the hydraulic telescopic rod 110 and effectively reducing the corrosion and wear of the seals at the interface by seawater, sand and other impurities. The extended lifespan of the seals reduces the risk of oil leaks due to sealing problems, thereby reducing downtime and economic costs caused by frequent seal replacements and hydraulic system maintenance, resulting in a significant increase in the overall service life of marine cranes.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the invention. For those skilled in the art, various modifications and variations can be made to this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A marine crane with hydraulic system oil leakage detection function, comprising a crane body (100) for lifting and transferring objects, characterized in that: The crane body (100) is provided with a hydraulic telescopic rod (110) for driving the crane boom on the crane body (100) to move. The hydraulic telescopic rod (110) is provided with a leakage detection component for detecting internal leakage inside the hydraulic telescopic rod (110). The leakage detection component is provided with two flow meters (111) for detecting the flow rate at the two inlet and outlet oil ends on the outer wall of the hydraulic telescopic rod (110). The hydraulic telescopic rod (110) is provided with a cleaning component (116) for cleaning the interface at the telescopic end of the hydraulic telescopic rod (110).

2. The marine crane with hydraulic system oil leakage detection function according to claim 1, characterized in that: Two flow meters (111) are respectively installed on the two inlet and outlet oil ends on the outer wall of the hydraulic telescopic rod (110). The inlet and outlet oil ends on one end wall of the flow meter (111) are connected to the inlet and outlet oil ends on the hydraulic telescopic rod (110) through pipe joints. The inlet and outlet oil ends on the other end wall of the flow meter (111) are connected to the hydraulic oil conveying pipeline (112) through pipe joints.

3. The marine crane with hydraulic system oil leakage detection function according to claim 1, characterized in that: The cleaning assembly (116) is provided with a piston cylinder (1161), the outer circumferential wall of the piston cylinder (1161) is connected to the outer circumferential wall of the hydraulic telescopic rod (110) through a connecting block (113), and a rubber piston (1165) is provided inside the piston cylinder (1161).

4. The marine crane with hydraulic system oil leakage detection function according to claim 3, characterized in that: The rubber piston (1165) is installed at one end of the piston rod (1162), and the other end of the piston rod (1162) is located outside the piston cylinder (1161). Two air inlet pipes (1166) and one exhaust pipe (1167) are provided on the circumferential outer wall of one end of the piston cylinder (1161), and one-way valves are provided on both the air inlet pipe (1166) and the exhaust pipe (1167).

5. The marine crane with hydraulic system oil leakage detection function according to claim 4, characterized in that: The air intake pipe (1166) is connected to the arc-shaped exhaust hood (1164) through the gas delivery pipe (1163), and the arc-shaped exhaust hood (1164) is set on both sides of the extension end interface of the hydraulic telescopic rod (110).

6. The marine crane with hydraulic system oil leakage detection function according to claim 1, characterized in that: Both ends of the hydraulic telescopic rod (110) are equipped with hinge joints (114), and the hinge joints (114) on the telescopic end of the hydraulic telescopic rod (110) are connected to the other end of the piston rod (1162) through an L-shaped connecting rod (115).

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